Feed and quick-release valve.



PATENTSD l, 1908. J. A. HICKS.

Nm mmm.

FEED AND QUICK RELEASE VALVE.

APPLIOATIUN ULEB IEB. 1b, 1907.

"i l. iation.

i' imi-111:

'chiami of the inited States, residing.: at. At-

the air presure, and whieh is siiupie in con- 'partS or in the. disussembiage of sut-.h parts ha; cosi. 1:1? Pq'uipment and fumi i a hmgiludinai section hrm J AM ES FEED mfp QUICK-:RELEASE VALVE( v Secicaton of Letters Patent.

'warm grams PATENT OFFRE.

.omits maiis, or ATLANTA', GEQRGIA, Assioizon To Hioiis nii-Raman ENGINE saam; COMPANY, or ATLNTA, Gia-01mm, .i ooiiPom'rioN or riizoama.

atented Sept. 1, 1908.

Application 51rd February 15, 1907. Serial Ho. 3515.68.

1,11 the canut); of Fzxiton and State of a, have invented certain new' :md fui .5.\io\'ei1-ents in Feed and Quick-Ke-4 ieas 'Jai ves, of which the fodowing is a specipresentinvelt'ion relates to feed or rsdurhig valves by means of which the prassaiz'o. maj; he stepped down or reduced from a source of supply to the point. of application, it. boing customary to provide reducing waives of this general type in uid pressure brake systems. in order that 'mitiai pressure in the system may be brought to the pressure desired in the brakeA cyiindeis,'and my present improveixient has for its objost the proviaion ofa feed or reducing valve. for this work 'iv'hnh ia highly efficient in its controi of struction and readily assemhied, either in the initial putting together of, its muponnt for tho purpose of inspection or repairs.

It farther object of my institution is to provide ii: cozmceion with the fend valve, a quid: i'eiense. do'vice to imm-o th.L csc-atie of ai r f1 o; u the: brake cyiindemv and thfi r leading in pipas when tho.- hrakvs are reiuasqd, the present emhodiim rit .of my invention :showmg this quick reiease derive in cinq* association with thv. feed 'faire proper, as the ciose pact and highiy edicion',

in the drawings herewith. whirh exhibitV non mnhodimout of my '.iwiiion: Figure. 1

'i my rumhinod i; -d and ndease rake. iig". .2 ir; a se@ tia-r; on lite Z--YZ of Fig'. l, laken at right zingies to the .section shown in Fig. Fig, 3 is a transwrsisection ou hue .'3--3 if Fig. L

Rcforring to the drawings h v nmnci'ais, like immilors indicating like parslin the bevemi viow; 4 dvsignates a i-asing or chamber for the food .'aiv`e,sa.id chamier 4, boing.; connected by a auitabL-.f-oaping at i3 with tho air sugipijf, "ithin the chnmhor is 'f' Yaivc jyvrhif-h la preirah.' oi the. t ing time shown; haring its "andy 51erl foratod to permit free i a air and' S i i 7 mounted in the chamber 4, said housing 7 being provided with an outletport S leading to the outlet chamber 9, which connects hy means o a suitabe cou'ihng with the 'Drake eviiuders or with the dciivery Conner-tions to tho point where the reduced ai? pressure. is to be utilized. The, outlet, chamber 9 coinmunicatos through a :suitable port. 1t) witha. piston housing' 11 in the chamber 4, and within said piston housing 1l iS mounted a piston head 12, which is secured to the spindie 13 'of the valve 6, said s'pindie 13 projecting through a. suitabi smiling head 14 intorposed hvtwooi the valve c'iamcr vand the piston chamber, so as to close communication hctiiieen them- A valve housing 7 is closed hy a suitable head I5 which carries a Spring theek vrdve 1F; opening into the 'faire housing 7 to admit air coming from the inkt connect-ion 5, but,`

whisk doses against, pressure in the opposite 'The other and of the direction.- The said piston 12, which, it will be apparent., is suhjot'tcd to tho` outht pressure mY the chamber 9, controla tho position of tinvalvc f5 'with respect to itc port S. In

'ordfr to regulate: the movelxituls of the piston faire to proportion the. prsure on the mist and outa-t side of tho tivo as may be daird, the piston i2 is :mdc-r the tension of u spring 17 mounted withinn adjustable head mit. 1S, t-hroadedvin thi;- nut 19 which ciusf's the rhaiiihor, :i staitizio. cap mit 2G being prm'idvd to omgaan and t-mm' the hond met, IS, hoth ihc houd mitY 18 und the raiz mit 242 huinf` perfunitod so :is tu ifimiiiain bark prerwuv Lohind tho piston 2i. Vi'ith this construction will he Scsi: thai when thv ii'ossiir falls in oitht Phamhr t) hdmi' t'mdesired point the spring i? will {ori'c the piston -12 and thv valve 6 forvmrd und untm'or the purl. S, .so :is to admit iidol prssure on w opposite sido of thv 'u1-iva to tho outlet. sido, and ifmmfdiatviy tho pr uro on the grad point its action against thu piston 1; through the port Ni, xviii forro (ho piston and `:dw book against. the spring and chiso tiuport, S.

vThe ronstrurion which l have dm'iwd is,

it wii! he appart-nt, :i wry wir Ju-t: :md s-.im-

da: one, for the heady of the ci :mix-r i. may LP rcadiiy cast. :and marhinud and the valve homing and the piston houfrifi which, as shown, arr iruerabiy formed in one piece, ma? ho readdyslipped into plzacf.- in the casting, and the several parts making up the one feature of my present improvementwhich is normally forced to its seat' in the. po-- comprisesa valve chamber 24,' which, as shown m the present embodiment of the 1nvention, 1s formed 1n the same casting with l the outlet chamber 9 hereinbel'ore referred to, the two chambers being in counnunication with each other through a port or passage. 26, which is i'ireierably formed, for a v urpose presently to be described, b v setting into the casting between rnc chambers a short housing or section 27 as clearly shown in Fig. 1. ''he said chamber 24 is in communication with the valve chamber 4 on the inlet side thereof, by means ol' a port. 2S so as to give normally an inlet' pressurein the valve chamber 24, thereby practieaii) forming a by-pass around the feed valve.. Mounted in said chamber 24 is a check valve. .ZJ,

.sition shown in full lines in Fig. l, by inlet 'pressure from passage 5, so that. connuunica- `tion between the outlet.' chamber El and the @heck valve chamber 24 is cut. oli.. `The said :its opposite. side..

cheek valve. 29 in addition to cutting oli' 'connnunicationbetween the o utlet chamber and the valve chamber so that. inlet 'pressure may not mss from the passage 5 into tbe out- ...let cham er .l except. through the. reducing valve, is suliiciently large to eilose an exhaust pocket 30, which in the form shown, eneireles theport; between the. chamber Si and thochcck valve. chamber 24, this exhaust pocket communieating with atmosphere through a series of exhaust.' o )enings 3| in thewall of the easing, and'it. wil when braking pressure, is let.. into thewgov' ernor valve it. will stand against the check valve 29 and hohl it. in closed position as shown in l` ig. 1, the pressure against the un-` der side of tbe cheek vulve from the. outlet chamber it) being insnllicient to unseatftbe cheek valve against. the greater pressure. on

Sure from the passage ."x is released to permit. the brakes to t iron' oli', the out lct pressure. in

' chamber t) will immediately unseat. the check valve 2l), and the air on the out letl side of the governor' 'valve will exhaust. ra )idly and quickly through the port .26 into t ie circular -pocket 30, and out through the exhaust openings 3i to the atmosphere, the cheek valve I6 in the governor valve chamber pre.- venting any exhaust from the inlet side. of the governor valve. back into the passage. 1t will be seen that with this construction a ver)r compact. arrangement of feed and release valve! is secured, and quick release of pressure from the brake cylinder and brake cylinder connections is. secured, as the exhaust takes place at'a point relatively close piston valve, the packing nuts, and the head Y l be seen that When, however, the presthe ports and passages with the exhaust is entirelv done away '\v1th. Furthermore,

tionwhen inlet pressure bas. once been relieved and the necessity ot separate exhaust iipes to take care of the. exhaust from the lnake evlinders is obviatcd.

vice in close relation to the eed valve, since the arrangement is an extremely simple and eflicient. one, it will be. obvious that the feed valve casing and the release. valve. easing might be made separate l' rom each other and placed some distance. apart. being coupled by suitable. piping, and such adaptation of my invention as well as all other changes within the 'skiil'of the mechanician`l deem to be Within the. purvieu of my invention, and l do tails of construction shown am described, except in so far as I am limited by tho prior art to which the invention belongs.

llaving disclosed mv invention, i claim:-

l. In a. device of tbe. class described and in combination, a press-urc-controlled iced valve, and an indciwndeni. brake. exhaust valve. operable nntonmtically upon a predetermined variation in pressures on the inlet and outlet sides oi said feed valve.

2. ln a device of the class described and in combination,` a pressure-controlled feed valve, and-an independent. brake exhaust valve opening automatically under outlet prcssurenpon a predetcrmined variation in )ressures on the inletl and outlet. sides ol said iced valve.

3. ln a device oi the class described and in'combinatioina pressore-eontrnlled feed valve, and an inde iendent. brake exhaust valve subject. to outlet pressure on one side and inlet iressurc on tbe other side, and nut.on|atieali v operable upon a predetermined variation in nessnres on the inlet. and outlet sides of said leed valve.

4. in a device ol' the class described und in'combination, a pressure-controlled iced valv'e, an exhaust passage on the. outlet. side ol' said feed valve, and an independent. valve controlling said exhaust passage. and automatic-ally operable upon a predetermined va- .riatiion in iressures on the inlet and out-let sides-oi sait iced valve.

5. In a device. oi' the. class described and in combination, a |n'cssure-eontrolltal feed valve. 'exhaust ports in the. outlet. chamber ol' said iced valve., and an indeimndent valve controlling said exhaust ports and automatically operable upon a predetermined variation in nessures on the inlet end outlet sides `ot' said eed valve.. A

'6. In a device of the. ciasedeseribed and in combination, a pressure-eontrolltul feed valve lsaid iced valve, and an independent valve this release is entirely automatic in its operarY v `While l have shown the (prick release de- I not, therefore, limit myself to anv of the. de-

back through return connections and fouling exhaust ports in theoutletehamberof r chamber having a chaniberfonnecting port therein, and a feed-valve mounted in said bushing and removable therewith controlling said port.

u 2. ln a device of the class described ano in combination, a casing having an mlet chamber and an outlet. chamber, a bushing longitudinally removable fromsaid inlet chamber and having a valve chamber and a piston chamber, a port; in said valve chamber co'nnecting the .inlet and outlet sidesAv of the valve, a port 'in said piston chamber com` municating with the outlet side of the valve, a spring piston valve controlling the port between the inlet and outlet sides of the valve, and a spring check valve in the end of said bushinn' tol prevent return of outlet pressure through the inlet. side of the valve. y

In testimony whereof I alli); my signature 30 in presence of two-witnesses.

,Y 'JAMES AMERS HICKS. Witnesseszi ARTHUR L, BRYANT, A. V. CUSHMAN. 

